Solar Power
Content
CONCENTRATED SOLAR POWER SOLUTIONS
Hydr Hy dro o Win nd nd Geothe h rmal he a Sola ar Ocean n Biomass Nuclear Coal Gas Oil Air Ai r Quality y Co C ntrol Systems Pow wer Automat tion and Controls Lifecy ycl c e Management CO2 Solutions
POWER
Welcome to Alstom Power
close to of the 25 percent world’s power production capacity depends on Alstom technology around 52,000 employees the world in 70 countries of industry 100 years leading expertise
Alstom is a global leader in power generation with a portfolio of products covering all fuel types. From fossil and biomass to nuclear and renewables, close to 25% of the world’s power production capacity now depends on Alstom technology or services. Whether in design, manufacture, procurement or servicing, Alstom is setting the benchmarks for innovative technologies that provide clean and efficient power solutions. Alstom can supply anything from single solutions or components to complete turnkey power plants; our Plant Integrator™ and Smart Grid solutions ensure the optimisation of all elements to derive the maximum lifetime value from all our customer’s investments. Alstom has over 100 years of experience in engineering, procurement and construction of new power plants. But our engineers are also experts in retrofitting, modernising or servicing existing plants. With operations in 70 countries, Alstom is close to customers all over the world, ensuring rapid responses and service excellence at all times.
Provider of the cleanest integrated power
Solar: a limitless clean power source
The Alstom advantages Our promise to customers ...................................................... page 04
Bringing global reach and EPC leadership to solar
Solar solutions Your opportunity, our applications ........................................................ page 08
Understanding the power of the sun and our offers for stand alone and hybrids, new plants and the installed base
From collection to connection How we deliver the value chain ................................... page 12
Design and engineering, components and systems, EPC turnkey, O&M
Strategic partnerships The BrightSource relationship .................................................. page 14
BrightSource LPT tower technology
Innovative technologies Maximising energy production ............................................... page 16
Turbines, generators, BOP, grid connection
O&M Services A partnership for performance ............................................................... page 18
From spare parts to operation and maintenance
Access to affordable power is the key to an improved standard of living for everyone. However, it is essential that this power be produced without negative environmental side effects. Alstom’s Clean Power Today® strategy recognises the need to improve the environmental balance of legacy plants, while increasing the adoption of new clean energy solutions.
1. Balancing the energy portfolio by increasing the share of renewable technologies 2. Focus on production efficiency and flexibility 3. Implementation of carbon capture and storage
The Alstom
Bringing global reach
CLEAN POWER TODAY!®
Alstom’s leadership in power generation is built on our complete portfolio for fossils and renewable solutions. Taking into account market and regulatory dynamics as well as technology developments, Alstom now offers expertise and solutions in Concentrated Solar Power (CSP) to tap into the free energy supplied by the sun with utility scale solar plants.
PLANT INTEGRATOR™
Alstom’s Plant Integrator™ approach optimises performance by balancing the interactions between plant subsystems from energy capture to grid connection. In Solar Thermal applications, integration expertise is everything especially when considering add-ons or hybrid plants.
LIFECYCLE MANAGEMENT
Partnership throughout the lifecycle of customers’ power plants: Alstom is the leader in design and supply of power generation delivering maximum plant performance, availability, reliability and environmental compliance. With more than 100 years of experience and the largest installed base of power generation equipment across the globe, Alstom has the knowledge to best enable power generators to stay competitive with changing market requirements. Our Commitment does not stop at commissioning. Alstom continues to be there through a power plant’s life with a focus on performance to meet changing asset strategies.
04
advantages
and EPC leadership to solar
With a strongly favourable regulatory climate and recent technological advances, solar energy is increasingly recognised as a viable energy investment. As leaders in steam turbine and boiler technology and plant integration capacity with decades of experience, Alstom has chosen to focus on the area of concentrated solar power (CSP) where significant potential exists for efficient utility scale production.
With over 100 years of experience in building steam power plants, Alstom has the expertise, technology and the product portfolio to meet our customers’ specific requirements. As a result, Alstom is the number one turnkey contractor for thermal power plants worldwide, applying the Plant Integrator™ concept for optimised power solutions.
Experienced leader
Our global network delivers high quality, cost-effective equipment and related services to customers around the world. We pride ourselves on using consistent processes in execution, engineering and manufacturing – delivering the highest level of product excellence in each of our locations. In fact, Alstom’s local expertise is what strengthens our global presence.
Worldwide presence
Wide-ranging product portfolio Alstom delivers power solutions that are fully integrated
and optimised, designed and manufactured in-house. Our portfolio includes steam turbines, turbogenerators and boilers, as well as balance of plant components. Alstom’s comprehensive knowledge of all types of equipment and technologies allows us to service both original and third-party components and systems. We also offer power automation control systems to automate and optimise plant performance and flexibility.
05
Alstom offers a complete portfolio of power generation equipment and services for all fuel types. By 2030 the world will have seen a significant change in the power generation mix with an increased share of CO2-free and renewable power. Alstom has a strong role to play in the emerging and growing solar power market.
Solar
Promising
Harvesting the he sun belt
Unlike photovoltaic generation, ion, which produces electricity directly from any ambient light, the more e CSP stable and fully dispatchable lar approach requires direct solar ants radiation. Solar Thermal plants m2/y require at least 1900 kWh/m2/y SP is as found on the sun-belt. CSP sting the ideal approach to harvesting rgethe sun’s free energy for largescale grid connected power table generation but it is also suitable ations. for remote industrial applications.
The sun is so powerful that it would take less than 1% of the world’s deserts covered with CSP plants to cover the world’s total electricity needs. This equals a square of around 300 x 300 km.
Storage makes all the difference
Because Solar Thermal plants warm a thermal fluid, unlike photovoltaic solar, they inherently have the ability to smooth out the effect of passing clouds. But how do you get power long after sundown when people need it? By integrating thermal storage into the solar plant, the power production can be extended for many hours after dark. During the day, a fraction of the heat captured from the sun will be stored in a thermal storage medium (molten salt). In the absence of the sun, the process is reverted and the stored heat is used to produce steam for continued power generation – a major advantage over photovoltaic solar.
08
solutions
locations and applications
Applications
Stand-alone Concentrated Solar Power (CSP)
Stand-alone CSP plants are the ideal choice for sun-belt locations where clean fuel-free power is required. At present, supporting incentives are necessary but technological advances mean solar thermal fields will soon rival fossil fuel plant energy prices. If needed by the customer, based on its consumption structure, the addition of a storage system to a CSP plant significantly adds to the project value with only a marginal increase in the overall investment
Hybrids
Hybrids are an important cornerstone in the transition to widespread solar energy production. They allow reduced fossil fuel consumption and more efficient solar energy to electicity conversion in base load or despachable plants. Hybrids make optimal use of currently available assets and are thus the least cost solar solutions. Ģ Repowering: A Solar Thermal plant can complement or fully replace an existing fossil boiler, while still leveraging the existing powerblock: Solar Share >20% to 100% Ģ Parallel GT: a small gas turbine/Heat Recovery Steam Generator (HRSG) arranged parallel to the solar system allows alternating or parallel operations to handle peak duties. Solar share 35 to 80%. Ģ Integrated Solar CC: Combined cycle power plants with fully integrated solar steam generation. Solar Share 10-30% Ģ Solar Boost: CSP can be used for partial or full pre-heating of condensate, feed water. Solar share: 5-10% Existing steam or gas plants can also benefit from the addition of a solar add-on to generate additional carbon-neutral steam with no extra fuel costs. Because all the infrastructure and grid connections already exist, the overall investment is relatively low. Alstom’s huge installed base and the experience gained from it coupled with it’s strengths in plant integration make us the ideal partner for hybrid solar applications for both new and existing plants. We offer a one-stop service beginning with configuration planning and feasibility studies right through to commissioning.
Meeting your environmental regulations
With the changing environmental regulatory framework demanding a greater share of power produced by CO2 free technologies, plant operators are looking at new ways to meet these targets. Whether you have an existing coal, gas or biomass plant and your location has an abundant direct radiation supply a new hybrid plant offers the perfect solution for guaranteed power production and flexible demand matching while at the same time adding a renewable, carbon and fuel free component to the energy mix.
09
Concentrating
Proven
Three CSP technologies
As an EPC contractor Alstom is able to support all three CSP technologies for stand-alone plants or in hybrid configurations.
Conversion efficency
Central Receiver
Parabolic Trough 2015 Linear Fresnel Today
Rated power MW
The steam produced in a CSP plant is in the optimal range for highly efficient steam to electricity conversion – Alstom’s speciality for almost 100 years. Furthermore, hotter steam means greater returns on storage system investments.
10
technologies
performance and big potential
Central Receiver (Tower)
Thousands of small flat mirrors, known as heliostats, track the sun on two axes and so concentrate the sun’s heat onto a boiler mounted on a tower. This produces high temperature steam that is piped to a conventional turbine to generate electricity. The intense energy concentration made possible by the large array of mirrors allows the highest operating efficiencies and lowest capital costs per kWh of any solar system. The result is a system that delivers clean, reliable energy at costs that are becoming competitive with fossil fuels.
Parabolic Trough
Parallel rows of curved mirrors focus sunlight on hundreds of kms of horizontal heat collecting pipes. The stainless steel pipes are specially coated to maximise absorption and minimize IR radiation and are insulated in evacuated glass envelopes. The mirrors and collectors move together tracking the sun on one axis. Commercial installations usually use synthetic oil as the thermal fluid so heat exchangers are required to generate super-heated steam to drive the turbine.
Linear Fresnel
Linear Fresnel systems simulate the effect of a parabolic trough system using a number of flat mirrors. These long narrow mirrors track the sun on one axis and reflect onto heat collecting pipes whose position is fixed. These changes come at the price of some collection and concentration efficiency but offer a number of compensating benefits.
11
From collection
Our
Design and development
Full component supply
Engineering from collection to connection: we support power producers with designing and planning standalone or hybrid solar plants. We have the industry leading solution for central tower CSP, thanks to our partnership with BrightSource Energy, and can handle all solar applications and configurations as a one stop custom shop. Building on decades of experience in turnkey power plant delivery, we can offer efficient: ĢEngineering & feasibility studies ĢOffers and financial coordination ĢPermitting ĢGrid planning
Solar Thermal plants are normally in remote arid locations with high ambient temperatures. Building on Alstom’s extensive plant integration and turbine experience, we offer everything from specific components to whole package solutions that are perfectly matched for the location and project needs. All our plant systems are designed to resist wear and damage and to facilitate practical inspection, maintenance and replacement. We engineer reliable solutions with the following services: ĢComplete power island including turbine and generator ĢAll component and material sourcing ĢManufacturing ĢTransport and assembly
We help you to maximise power output and profitability – from ground DNI measurements, feasibility studies to plant configuration and from construction to maintenance
PLANT INTEGRATOR™
12
to connection
comprehensive service portfolio
Power plant construction & grid connection
As the engineering, construction and procurement (EPC) provider, Alstom has commissioned more than 360 conventional steam power plants during the last 30 years. Drawing on this expertise, Alstom now provides full EPC services for solar power plants. We construct optimised solutions covering: ĢSolar concentration and collection ĢSteam boiler ĢTurbine and generator ĢCondensing and cooling systems ĢPower plant distributed control system (DCS) Ģ Piping, valves and power island balance of plant (BOP) ĢElectrical cabling and high-voltage power export / grid connection ĢCivil engineering & plant construction management
Operation and maintenance
Having supplied major components to more than 1170GW of power generation around the world, Alstom is not just a leading global original equipment manufacturer (OEM) and an EPC provider. We are also responsible for the operation and maintenance (O&M) of non-Alstom equipment and plants worldwide. We have over 20 years experience servicing and maintaining solar plants and their associated equipment. We offer a range of operation and maintenance services packaged either as long-term service agreements combined with the plant warranty, or as troubleshooting services on a case-by-case basis.
Optimising the value chain
The Plant Integrator™ approach creates real value for our customers by optimising the entire value chain and overall plant performance. As an OEM, EPC and O&M provider, Alstom has a unique perspective that allows for analysis of the whole plant and the full lifecycle as an integrated system. This is of particular significance for solar applications, where scale effects and integration are vital in the pursuit of viable performance. Using models and benchmarks, we demonstrate how specific investment costs and performance data can be understood in their true context, helping customers to make sustainable commercial as well as environmental decisions.
13
Strategic
BrightSource
Benefits of LPT tower technology
Ģ Proven technology Ģ High operating efficiency Ģ Direct solar-to-steam Ģ High temperature: >565°C Ģ High pressure: 165 bar Ģ Low parasitic load Ģ Low capital cost Ģ Uses commodity materials Ģ Small, flat-glass mirrors Ģ Minimum concrete Ģ Minimum steel Ģ Environmentally friendly Ģ Flora- and fauna-friendly pylons Ģ Dry-cooled for zero liquid discharge Ģ Water use 25x less than competing technologies Ģ CO2 Free
Low impact heliostats
BrightSource’s tracking mirrors consist of two flat glass mirrors mounted on a single pylon equipped with a computer-controlled drive system. Tracking the sun in two-directions, they maximise sunlight collection while accurately aiming at the solar receiver. The lowimpact design of the heliostat allows a slope of up to 5% and eliminates the need for the concrete pads used with other solar thermal technologies, reducing the system’s environmental impact.
14
partnerships
LPT tower technology
Alstom chose BrightSource as a partner because of the company’s internationally renowned technology, extensive experience and impressive pipeline.
Key partnership
In 2010, Alstom further enhanced its offering by announcing an investment and commercial partnership with BrightSource Energy Inc. This allows us to offer our customers three decades of solar experience and the most advanced collection and tracking systems for CSP currently available. Building on this and other proven and reliable technology, we offer everything from full EPC turnkey plant construction to individual component supply for Concentrated Solar Power (CSP) plants.
Expertise in person and in practice
The principal members of the BrightSource technical team built the world’s first commercially viable solar thermal plants based on trough technology three decades ago. The installations totalling 345 MW are still operating today. BrightSource operates a Solar Energy Development Centre in the Middle East, demonstrating BrightSource’s technology and since 2008 it has been producing the world’s highest temperature and pressure solar thermal steam in a 4-6 MW Tower based demonstration plant. In 2011, BrightSource delivered the Coalinga 29 MW thermal solar-to-steam facility for enhanced oil recovery (EOR).
Pipelines and energy contracts
Besides the investment, Alstom and BrightSource have signed a commercial agreement allowing BrightSource to profit from Alstom’s Plant Integrator™ capabilities and proven engineering, procurement and construction (EPC) skills. On the other hand, Alstom’s customers will benefit from the BrightSource solar field technology, which represents a state of the art, cost-effective and reliable large-scale solar energy solution and Alstom’s unsurpassed integration capabilities.
15
Innovative
From boiler
Solar receiver
Alstom has designed and delivered Steam Generators for all type of applications from industrial sized applications for heat recovery up to utility scale ultrasupercritical applications. The extensive experience in designing and sizing equipment for withstanding the highest temperature and pressure conditions has been successfully demonstrated during decades of operation around the world. Our industry leading boiler expertise will now strongly contribute in shaping the future of the next generations of CSP plans by designing and building the highest efficiency solar receivers. Alstom‘s solar receiver technology defines the crucial interface between the optical of the solar field and the traditional conventional steam cycle. Therefore, such a state-of-the-art product is the complex result of engineering excellence and plant integration expertise. Our promise is to deliver the best in class technology to enable you to harvest the sun for decades based on most reliable, flexible and integrated solar technologies. Alstom‘s portfolio of solar receiver is steadily growing serving all type of power generation applications.
Steam turbines
Alstom has delivered more than 1,100 small steam turbines of below 150 MW totalling more than 27 GW in installed capacity worldwide. Our small steam turbines are designed to reduce plant capital costs through their modularity, flexible exhaust configurations and floor mounted, compact packaging concept that allows easy installation and maintenance. Steam turbine families commonly offered for Solar Thermal solutions: Ģ TM2 – from 45 to 55 MW Ģ MT – from 60 to 150 MW Ģ STF25/30 – from 150 to 250 MW
Alstom steam turbines are well suited for CSP applications
Solutions to maximize plant efficiency: Ģ Alstom’s advanced turbine blade technology ĢMaterial selection and turbine construction for high steam parameters Ģ Steam extractions fit to efficient feed-water pre-heating cycles Ģ Turbine exhaust casing designed to minimise exhaust losses Components designed for plant operation flexibility: Ģ Short start-up time Ģ High cycling operation Ģ Lengthened intervals between overhauls Ģ Shortened outage periods Highly flexible modular concept to reduce plant capital costs: Ģ Axial and lateral exhaust arrangements Ģ Fit for both air and water cooled condensate systems Ģ Applicable both for 50 and 60 Hz grids Ģ Reheat or non-reheat cycles Ģ 1 or 2 casing turbines to best suit the project
16
technologies
to the grid
Alstom is a global leader in steam turbine and boiler technology with over 100 years experience in manufacturing, delivering, installing and servicing.
Generators
TOPAIR
As the world leader in air-cooled technology, Alstom offers TOPAIR a simple and robust air-cooled turbogenerator. With a range of 150-400 MW (50Hz) or 90-300 MW (60 Hz), the TOPAIR can be used where a hydrogen-cooled turbo generator was used previously.
TOPACK
TOPACK is the all-in-one solution that can be simply integrated into your power plant and is easy to maintain. Alstom’s air- cooled TOPACK turbo generator is remarkable for its accumulated experience with over 2,000 units installed worldwide. With a range of 40-150 MW at 50 Hz and 40-90 MW at 60 Hz, it is sufficiently versatile to suit all kinds of applications and climates and due to its’ compact nature means it can be delivered in one contained unit allowing for easy erection.
Heat exchangers, balance of plant & grid connection
The overall performance of the power plant is only as good as the weakest link along the generation chain. Best in class key components are enablers for top performing generation units, but the throughout knowledge on balance of plant as well. Alstom’s historic experience as turnkey plant provider ensures, that only best matching BOP equipments and best in class heat exchangers are integrated, while our DCS systems will ensure reliable control and safety of your plant operations. The majority of solar radiation ideal potential are often away from the centers of demand. This makes power distribution one of the major challenges for the solar industry. Thanks to its wind and hydro power plants track record, Alstom is familiar with the challenge of connecting renewable energy plants to any type of grid. Let us help you plan and implement your balance of plant and grid connections. 17
Operation and maintenance
A partnership for performance
Powering performance
Teaming up with an experienced partner is the best way to manage risks. Alstom offers an unprecedented wealth of know-how and experience as a leading Original Equipment Manufacturer (OEM) and Engineering, Procurement and Construction (EPC). As a full-service provider, we offer contracts, tailored to meet all your operational, maintenance and support requirements for concentrated solar power plants. Alstom’s operations and maintenance (O&M) contracts are a transparent set of answers to the business critical questions that all power plant owners and operators face prior to investment and during operations. If you want to improve speed of response, flexibility and lead times in project execution start with an Alstom O&M contract. Alstom offers tailored Operation and Maintenance strategies designed to: Ģ Improve generation efficiency Ģ Maximise availability Ģ Extend component and system lifetimes The keys to achieving these goals lie in system and component optimisation, effective planned maintenance and suitable upgrades and retrofits. In accordance with our clean power strategy, we always consider profitability and commercial excellence in the wider context of environmental, health and safety considerations.
Consulting & support
We help customers maximise plant performance, availability and reliability by offering performance and lifetime assessments, training, monitoring and diagnostics. Advanced analysis of fleet-wide data allows us to help you reduce risks and optimise availability.
Parts
With Alstom, you’ll never be without the parts you need. Apart from off-the-shelf spares, we offer repairs and reconditioning as well as custommade components. Our advanced component management system ensures the traceability of parts, accessibility of data and competitiveness of pricing.
Field service
There is always an Alstom engineer close at hand. Supported by a local service network providing a rapid response capability to reduce outage time and increase performance.
O&M contracts
We offer a portfolio of operations and maintenance contracts based on performance commitments and incentives. The flexible offering covers engineering, products and services over the plant’s full lifecycle and can be tuned to match your business objectives.
18
RPW/BGENE/CSLRPS11/eng/SOL/12.11/FR/7517 © ALSTOM 2011. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited. Photo credits: ALSTOM, BrightSource Energy, Darren Baker Fotolia, Francois Fautex Information Media Solutions
Alstom contributes to the protection of the environment. This brochure is printed on environmentally-friendly paper.
Alstom Solar
Alstom Power Brown Boveri Str. 7 5401 Baden Switzerland
Alstom Power 4 avenue André Malraux Levallois-Perret 92300 France
www.alstom.com/power
Hydr Hy dro o Win nd nd Geothe h rmal he a Sola ar Ocean n Biomass Nuclear Coal Gas Oil Air Ai r Quality y Co C ntrol Systems Pow wer Automat tion and Controls Lifecy ycl c e Management CO2 Solutions
POWER
Welcome to Alstom Power
close to of the 25 percent world’s power production capacity depends on Alstom technology around 52,000 employees the world in 70 countries of industry 100 years leading expertise
Alstom is a global leader in power generation with a portfolio of products covering all fuel types. From fossil and biomass to nuclear and renewables, close to 25% of the world’s power production capacity now depends on Alstom technology or services. Whether in design, manufacture, procurement or servicing, Alstom is setting the benchmarks for innovative technologies that provide clean and efficient power solutions. Alstom can supply anything from single solutions or components to complete turnkey power plants; our Plant Integrator™ and Smart Grid solutions ensure the optimisation of all elements to derive the maximum lifetime value from all our customer’s investments. Alstom has over 100 years of experience in engineering, procurement and construction of new power plants. But our engineers are also experts in retrofitting, modernising or servicing existing plants. With operations in 70 countries, Alstom is close to customers all over the world, ensuring rapid responses and service excellence at all times.
Provider of the cleanest integrated power
Solar: a limitless clean power source
The Alstom advantages Our promise to customers ...................................................... page 04
Bringing global reach and EPC leadership to solar
Solar solutions Your opportunity, our applications ........................................................ page 08
Understanding the power of the sun and our offers for stand alone and hybrids, new plants and the installed base
From collection to connection How we deliver the value chain ................................... page 12
Design and engineering, components and systems, EPC turnkey, O&M
Strategic partnerships The BrightSource relationship .................................................. page 14
BrightSource LPT tower technology
Innovative technologies Maximising energy production ............................................... page 16
Turbines, generators, BOP, grid connection
O&M Services A partnership for performance ............................................................... page 18
From spare parts to operation and maintenance
Access to affordable power is the key to an improved standard of living for everyone. However, it is essential that this power be produced without negative environmental side effects. Alstom’s Clean Power Today® strategy recognises the need to improve the environmental balance of legacy plants, while increasing the adoption of new clean energy solutions.
1. Balancing the energy portfolio by increasing the share of renewable technologies 2. Focus on production efficiency and flexibility 3. Implementation of carbon capture and storage
The Alstom
Bringing global reach
CLEAN POWER TODAY!®
Alstom’s leadership in power generation is built on our complete portfolio for fossils and renewable solutions. Taking into account market and regulatory dynamics as well as technology developments, Alstom now offers expertise and solutions in Concentrated Solar Power (CSP) to tap into the free energy supplied by the sun with utility scale solar plants.
PLANT INTEGRATOR™
Alstom’s Plant Integrator™ approach optimises performance by balancing the interactions between plant subsystems from energy capture to grid connection. In Solar Thermal applications, integration expertise is everything especially when considering add-ons or hybrid plants.
LIFECYCLE MANAGEMENT
Partnership throughout the lifecycle of customers’ power plants: Alstom is the leader in design and supply of power generation delivering maximum plant performance, availability, reliability and environmental compliance. With more than 100 years of experience and the largest installed base of power generation equipment across the globe, Alstom has the knowledge to best enable power generators to stay competitive with changing market requirements. Our Commitment does not stop at commissioning. Alstom continues to be there through a power plant’s life with a focus on performance to meet changing asset strategies.
04
advantages
and EPC leadership to solar
With a strongly favourable regulatory climate and recent technological advances, solar energy is increasingly recognised as a viable energy investment. As leaders in steam turbine and boiler technology and plant integration capacity with decades of experience, Alstom has chosen to focus on the area of concentrated solar power (CSP) where significant potential exists for efficient utility scale production.
With over 100 years of experience in building steam power plants, Alstom has the expertise, technology and the product portfolio to meet our customers’ specific requirements. As a result, Alstom is the number one turnkey contractor for thermal power plants worldwide, applying the Plant Integrator™ concept for optimised power solutions.
Experienced leader
Our global network delivers high quality, cost-effective equipment and related services to customers around the world. We pride ourselves on using consistent processes in execution, engineering and manufacturing – delivering the highest level of product excellence in each of our locations. In fact, Alstom’s local expertise is what strengthens our global presence.
Worldwide presence
Wide-ranging product portfolio Alstom delivers power solutions that are fully integrated
and optimised, designed and manufactured in-house. Our portfolio includes steam turbines, turbogenerators and boilers, as well as balance of plant components. Alstom’s comprehensive knowledge of all types of equipment and technologies allows us to service both original and third-party components and systems. We also offer power automation control systems to automate and optimise plant performance and flexibility.
05
Alstom offers a complete portfolio of power generation equipment and services for all fuel types. By 2030 the world will have seen a significant change in the power generation mix with an increased share of CO2-free and renewable power. Alstom has a strong role to play in the emerging and growing solar power market.
Solar
Promising
Harvesting the he sun belt
Unlike photovoltaic generation, ion, which produces electricity directly from any ambient light, the more e CSP stable and fully dispatchable lar approach requires direct solar ants radiation. Solar Thermal plants m2/y require at least 1900 kWh/m2/y SP is as found on the sun-belt. CSP sting the ideal approach to harvesting rgethe sun’s free energy for largescale grid connected power table generation but it is also suitable ations. for remote industrial applications.
The sun is so powerful that it would take less than 1% of the world’s deserts covered with CSP plants to cover the world’s total electricity needs. This equals a square of around 300 x 300 km.
Storage makes all the difference
Because Solar Thermal plants warm a thermal fluid, unlike photovoltaic solar, they inherently have the ability to smooth out the effect of passing clouds. But how do you get power long after sundown when people need it? By integrating thermal storage into the solar plant, the power production can be extended for many hours after dark. During the day, a fraction of the heat captured from the sun will be stored in a thermal storage medium (molten salt). In the absence of the sun, the process is reverted and the stored heat is used to produce steam for continued power generation – a major advantage over photovoltaic solar.
08
solutions
locations and applications
Applications
Stand-alone Concentrated Solar Power (CSP)
Stand-alone CSP plants are the ideal choice for sun-belt locations where clean fuel-free power is required. At present, supporting incentives are necessary but technological advances mean solar thermal fields will soon rival fossil fuel plant energy prices. If needed by the customer, based on its consumption structure, the addition of a storage system to a CSP plant significantly adds to the project value with only a marginal increase in the overall investment
Hybrids
Hybrids are an important cornerstone in the transition to widespread solar energy production. They allow reduced fossil fuel consumption and more efficient solar energy to electicity conversion in base load or despachable plants. Hybrids make optimal use of currently available assets and are thus the least cost solar solutions. Ģ Repowering: A Solar Thermal plant can complement or fully replace an existing fossil boiler, while still leveraging the existing powerblock: Solar Share >20% to 100% Ģ Parallel GT: a small gas turbine/Heat Recovery Steam Generator (HRSG) arranged parallel to the solar system allows alternating or parallel operations to handle peak duties. Solar share 35 to 80%. Ģ Integrated Solar CC: Combined cycle power plants with fully integrated solar steam generation. Solar Share 10-30% Ģ Solar Boost: CSP can be used for partial or full pre-heating of condensate, feed water. Solar share: 5-10% Existing steam or gas plants can also benefit from the addition of a solar add-on to generate additional carbon-neutral steam with no extra fuel costs. Because all the infrastructure and grid connections already exist, the overall investment is relatively low. Alstom’s huge installed base and the experience gained from it coupled with it’s strengths in plant integration make us the ideal partner for hybrid solar applications for both new and existing plants. We offer a one-stop service beginning with configuration planning and feasibility studies right through to commissioning.
Meeting your environmental regulations
With the changing environmental regulatory framework demanding a greater share of power produced by CO2 free technologies, plant operators are looking at new ways to meet these targets. Whether you have an existing coal, gas or biomass plant and your location has an abundant direct radiation supply a new hybrid plant offers the perfect solution for guaranteed power production and flexible demand matching while at the same time adding a renewable, carbon and fuel free component to the energy mix.
09
Concentrating
Proven
Three CSP technologies
As an EPC contractor Alstom is able to support all three CSP technologies for stand-alone plants or in hybrid configurations.
Conversion efficency
Central Receiver
Parabolic Trough 2015 Linear Fresnel Today
Rated power MW
The steam produced in a CSP plant is in the optimal range for highly efficient steam to electricity conversion – Alstom’s speciality for almost 100 years. Furthermore, hotter steam means greater returns on storage system investments.
10
technologies
performance and big potential
Central Receiver (Tower)
Thousands of small flat mirrors, known as heliostats, track the sun on two axes and so concentrate the sun’s heat onto a boiler mounted on a tower. This produces high temperature steam that is piped to a conventional turbine to generate electricity. The intense energy concentration made possible by the large array of mirrors allows the highest operating efficiencies and lowest capital costs per kWh of any solar system. The result is a system that delivers clean, reliable energy at costs that are becoming competitive with fossil fuels.
Parabolic Trough
Parallel rows of curved mirrors focus sunlight on hundreds of kms of horizontal heat collecting pipes. The stainless steel pipes are specially coated to maximise absorption and minimize IR radiation and are insulated in evacuated glass envelopes. The mirrors and collectors move together tracking the sun on one axis. Commercial installations usually use synthetic oil as the thermal fluid so heat exchangers are required to generate super-heated steam to drive the turbine.
Linear Fresnel
Linear Fresnel systems simulate the effect of a parabolic trough system using a number of flat mirrors. These long narrow mirrors track the sun on one axis and reflect onto heat collecting pipes whose position is fixed. These changes come at the price of some collection and concentration efficiency but offer a number of compensating benefits.
11
From collection
Our
Design and development
Full component supply
Engineering from collection to connection: we support power producers with designing and planning standalone or hybrid solar plants. We have the industry leading solution for central tower CSP, thanks to our partnership with BrightSource Energy, and can handle all solar applications and configurations as a one stop custom shop. Building on decades of experience in turnkey power plant delivery, we can offer efficient: ĢEngineering & feasibility studies ĢOffers and financial coordination ĢPermitting ĢGrid planning
Solar Thermal plants are normally in remote arid locations with high ambient temperatures. Building on Alstom’s extensive plant integration and turbine experience, we offer everything from specific components to whole package solutions that are perfectly matched for the location and project needs. All our plant systems are designed to resist wear and damage and to facilitate practical inspection, maintenance and replacement. We engineer reliable solutions with the following services: ĢComplete power island including turbine and generator ĢAll component and material sourcing ĢManufacturing ĢTransport and assembly
We help you to maximise power output and profitability – from ground DNI measurements, feasibility studies to plant configuration and from construction to maintenance
PLANT INTEGRATOR™
12
to connection
comprehensive service portfolio
Power plant construction & grid connection
As the engineering, construction and procurement (EPC) provider, Alstom has commissioned more than 360 conventional steam power plants during the last 30 years. Drawing on this expertise, Alstom now provides full EPC services for solar power plants. We construct optimised solutions covering: ĢSolar concentration and collection ĢSteam boiler ĢTurbine and generator ĢCondensing and cooling systems ĢPower plant distributed control system (DCS) Ģ Piping, valves and power island balance of plant (BOP) ĢElectrical cabling and high-voltage power export / grid connection ĢCivil engineering & plant construction management
Operation and maintenance
Having supplied major components to more than 1170GW of power generation around the world, Alstom is not just a leading global original equipment manufacturer (OEM) and an EPC provider. We are also responsible for the operation and maintenance (O&M) of non-Alstom equipment and plants worldwide. We have over 20 years experience servicing and maintaining solar plants and their associated equipment. We offer a range of operation and maintenance services packaged either as long-term service agreements combined with the plant warranty, or as troubleshooting services on a case-by-case basis.
Optimising the value chain
The Plant Integrator™ approach creates real value for our customers by optimising the entire value chain and overall plant performance. As an OEM, EPC and O&M provider, Alstom has a unique perspective that allows for analysis of the whole plant and the full lifecycle as an integrated system. This is of particular significance for solar applications, where scale effects and integration are vital in the pursuit of viable performance. Using models and benchmarks, we demonstrate how specific investment costs and performance data can be understood in their true context, helping customers to make sustainable commercial as well as environmental decisions.
13
Strategic
BrightSource
Benefits of LPT tower technology
Ģ Proven technology Ģ High operating efficiency Ģ Direct solar-to-steam Ģ High temperature: >565°C Ģ High pressure: 165 bar Ģ Low parasitic load Ģ Low capital cost Ģ Uses commodity materials Ģ Small, flat-glass mirrors Ģ Minimum concrete Ģ Minimum steel Ģ Environmentally friendly Ģ Flora- and fauna-friendly pylons Ģ Dry-cooled for zero liquid discharge Ģ Water use 25x less than competing technologies Ģ CO2 Free
Low impact heliostats
BrightSource’s tracking mirrors consist of two flat glass mirrors mounted on a single pylon equipped with a computer-controlled drive system. Tracking the sun in two-directions, they maximise sunlight collection while accurately aiming at the solar receiver. The lowimpact design of the heliostat allows a slope of up to 5% and eliminates the need for the concrete pads used with other solar thermal technologies, reducing the system’s environmental impact.
14
partnerships
LPT tower technology
Alstom chose BrightSource as a partner because of the company’s internationally renowned technology, extensive experience and impressive pipeline.
Key partnership
In 2010, Alstom further enhanced its offering by announcing an investment and commercial partnership with BrightSource Energy Inc. This allows us to offer our customers three decades of solar experience and the most advanced collection and tracking systems for CSP currently available. Building on this and other proven and reliable technology, we offer everything from full EPC turnkey plant construction to individual component supply for Concentrated Solar Power (CSP) plants.
Expertise in person and in practice
The principal members of the BrightSource technical team built the world’s first commercially viable solar thermal plants based on trough technology three decades ago. The installations totalling 345 MW are still operating today. BrightSource operates a Solar Energy Development Centre in the Middle East, demonstrating BrightSource’s technology and since 2008 it has been producing the world’s highest temperature and pressure solar thermal steam in a 4-6 MW Tower based demonstration plant. In 2011, BrightSource delivered the Coalinga 29 MW thermal solar-to-steam facility for enhanced oil recovery (EOR).
Pipelines and energy contracts
Besides the investment, Alstom and BrightSource have signed a commercial agreement allowing BrightSource to profit from Alstom’s Plant Integrator™ capabilities and proven engineering, procurement and construction (EPC) skills. On the other hand, Alstom’s customers will benefit from the BrightSource solar field technology, which represents a state of the art, cost-effective and reliable large-scale solar energy solution and Alstom’s unsurpassed integration capabilities.
15
Innovative
From boiler
Solar receiver
Alstom has designed and delivered Steam Generators for all type of applications from industrial sized applications for heat recovery up to utility scale ultrasupercritical applications. The extensive experience in designing and sizing equipment for withstanding the highest temperature and pressure conditions has been successfully demonstrated during decades of operation around the world. Our industry leading boiler expertise will now strongly contribute in shaping the future of the next generations of CSP plans by designing and building the highest efficiency solar receivers. Alstom‘s solar receiver technology defines the crucial interface between the optical of the solar field and the traditional conventional steam cycle. Therefore, such a state-of-the-art product is the complex result of engineering excellence and plant integration expertise. Our promise is to deliver the best in class technology to enable you to harvest the sun for decades based on most reliable, flexible and integrated solar technologies. Alstom‘s portfolio of solar receiver is steadily growing serving all type of power generation applications.
Steam turbines
Alstom has delivered more than 1,100 small steam turbines of below 150 MW totalling more than 27 GW in installed capacity worldwide. Our small steam turbines are designed to reduce plant capital costs through their modularity, flexible exhaust configurations and floor mounted, compact packaging concept that allows easy installation and maintenance. Steam turbine families commonly offered for Solar Thermal solutions: Ģ TM2 – from 45 to 55 MW Ģ MT – from 60 to 150 MW Ģ STF25/30 – from 150 to 250 MW
Alstom steam turbines are well suited for CSP applications
Solutions to maximize plant efficiency: Ģ Alstom’s advanced turbine blade technology ĢMaterial selection and turbine construction for high steam parameters Ģ Steam extractions fit to efficient feed-water pre-heating cycles Ģ Turbine exhaust casing designed to minimise exhaust losses Components designed for plant operation flexibility: Ģ Short start-up time Ģ High cycling operation Ģ Lengthened intervals between overhauls Ģ Shortened outage periods Highly flexible modular concept to reduce plant capital costs: Ģ Axial and lateral exhaust arrangements Ģ Fit for both air and water cooled condensate systems Ģ Applicable both for 50 and 60 Hz grids Ģ Reheat or non-reheat cycles Ģ 1 or 2 casing turbines to best suit the project
16
technologies
to the grid
Alstom is a global leader in steam turbine and boiler technology with over 100 years experience in manufacturing, delivering, installing and servicing.
Generators
TOPAIR
As the world leader in air-cooled technology, Alstom offers TOPAIR a simple and robust air-cooled turbogenerator. With a range of 150-400 MW (50Hz) or 90-300 MW (60 Hz), the TOPAIR can be used where a hydrogen-cooled turbo generator was used previously.
TOPACK
TOPACK is the all-in-one solution that can be simply integrated into your power plant and is easy to maintain. Alstom’s air- cooled TOPACK turbo generator is remarkable for its accumulated experience with over 2,000 units installed worldwide. With a range of 40-150 MW at 50 Hz and 40-90 MW at 60 Hz, it is sufficiently versatile to suit all kinds of applications and climates and due to its’ compact nature means it can be delivered in one contained unit allowing for easy erection.
Heat exchangers, balance of plant & grid connection
The overall performance of the power plant is only as good as the weakest link along the generation chain. Best in class key components are enablers for top performing generation units, but the throughout knowledge on balance of plant as well. Alstom’s historic experience as turnkey plant provider ensures, that only best matching BOP equipments and best in class heat exchangers are integrated, while our DCS systems will ensure reliable control and safety of your plant operations. The majority of solar radiation ideal potential are often away from the centers of demand. This makes power distribution one of the major challenges for the solar industry. Thanks to its wind and hydro power plants track record, Alstom is familiar with the challenge of connecting renewable energy plants to any type of grid. Let us help you plan and implement your balance of plant and grid connections. 17
Operation and maintenance
A partnership for performance
Powering performance
Teaming up with an experienced partner is the best way to manage risks. Alstom offers an unprecedented wealth of know-how and experience as a leading Original Equipment Manufacturer (OEM) and Engineering, Procurement and Construction (EPC). As a full-service provider, we offer contracts, tailored to meet all your operational, maintenance and support requirements for concentrated solar power plants. Alstom’s operations and maintenance (O&M) contracts are a transparent set of answers to the business critical questions that all power plant owners and operators face prior to investment and during operations. If you want to improve speed of response, flexibility and lead times in project execution start with an Alstom O&M contract. Alstom offers tailored Operation and Maintenance strategies designed to: Ģ Improve generation efficiency Ģ Maximise availability Ģ Extend component and system lifetimes The keys to achieving these goals lie in system and component optimisation, effective planned maintenance and suitable upgrades and retrofits. In accordance with our clean power strategy, we always consider profitability and commercial excellence in the wider context of environmental, health and safety considerations.
Consulting & support
We help customers maximise plant performance, availability and reliability by offering performance and lifetime assessments, training, monitoring and diagnostics. Advanced analysis of fleet-wide data allows us to help you reduce risks and optimise availability.
Parts
With Alstom, you’ll never be without the parts you need. Apart from off-the-shelf spares, we offer repairs and reconditioning as well as custommade components. Our advanced component management system ensures the traceability of parts, accessibility of data and competitiveness of pricing.
Field service
There is always an Alstom engineer close at hand. Supported by a local service network providing a rapid response capability to reduce outage time and increase performance.
O&M contracts
We offer a portfolio of operations and maintenance contracts based on performance commitments and incentives. The flexible offering covers engineering, products and services over the plant’s full lifecycle and can be tuned to match your business objectives.
18
RPW/BGENE/CSLRPS11/eng/SOL/12.11/FR/7517 © ALSTOM 2011. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited. Photo credits: ALSTOM, BrightSource Energy, Darren Baker Fotolia, Francois Fautex Information Media Solutions
Alstom contributes to the protection of the environment. This brochure is printed on environmentally-friendly paper.
Alstom Solar
Alstom Power Brown Boveri Str. 7 5401 Baden Switzerland
Alstom Power 4 avenue André Malraux Levallois-Perret 92300 France
www.alstom.com/power
